3. Slowly lower the bit as shown until it enters the first alignment hole shown. If it does not line up use the arrow keys to nudge the spindle until it does.

If you had to nudge, enter .625 in both the X and Y DROs. This will reset your reference.

4. Using the MIDI interface again issue the following Gcode command: "G01 x4.31" as shown.

5. Lower the bit. It should line up with the second alignment hole. If it does not then something on your machine is out of alignment. It could be your fences or your machine may need to be recalibrated.

Prep the PCB

Loosen the hold down screws.

Insert the PCB until it rests against the two lower screw shafts, then raised just enough so that the lower screw heads just catch the board. The board should be centered between the two side screws.

As an option you can insert the top two holding screws and just center the board enough so that all the screw heads will catch the board.

Insert a 1/8 up-spiral bit and using a probe set the Z reference to the top of the PCB.